Encyclopedia of Microtonal Music Theory

fifth / 5th / diatonic-5th

[Joe Monzo]

A diatonic interval which traverses 4 steps in a diatonic scale, and covers a pitch distance bounded by 5 nominals inclusively. This refers to the generic usage of "5th" without a qualifying adjective, which often precedes the interval name in standard diatonic usage. Thus, the various different types of diatonic 5ths are (in order of size from smallest to largest):

diminished-5th

perfect-5th

augmented-5th

The use of "5th" alone, without a qualifier, generally refers specifically to the perfect-5th.

. . . . . . . . .

The tonalsoft.com website is almost entirely the work of one person: me, Joe Monzo. Please reward me for my knowledge and effort by choosing your preferred level of financial support. Thank you.